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Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Changes in Carrying Amount of Goodwill | The changes in the carrying amount of goodwill for the nine months ended September 30, 2019, by reportable business segment, were as follows:
| FMT |  | HST |  | FSDP |  | IDEX
Goodwill | $ | 601,762 |  |  | $ | 895,177 |  |  | $ | 401,647 |  |  | $ | 1,898,586 |
Accumulated goodwill impairment losses | (20,721 | ) |  | (149,820 | ) |  | (30,090 | ) |  | (200,631 | )
Balance at December 31, 2018 | 581,041 |  |  | 745,357 |  |  | 371,557 |  |  | 1,697,955 |
Foreign currency translation | (4,797 | ) |  | (10,083 | ) |  | (6,220 | ) |  | (21,100 | )
Acquisitions | — |  |  | 97,352 |  |  | — |  |  | 97,352 |
Acquisition adjustments | — |  |  | 183 |  |  | — |  |  | 183 |
Balance at September 30, 2019 | $ | 576,244 |  |  | $ | 832,809 |  |  | $ | 365,337 |  |  | $ | 1,774,390 |
Schedule of Gross Carrying Value and Accumulated Amortization For Each Major Class of Intangible Asset | The following table provides the gross carrying value and accumulated amortization for each major class of intangible asset at September 30, 2019 and December 31, 2018:
| At September 30, 2019 |  |  |  | At December 31, 2018
| Gross Carrying Amount |  | Accumulated Amortization |  | Net |  | Weighted Average Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net
Amortized intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Patents | $ | 6,583 |  |  | $ | (5,135 | ) |  | $ | 1,448 |  |  | 12 |  | $ | 6,468 |  |  | $ | (4,693 | ) |  | $ | 1,775 |
Trade names | 120,744 |  |  | (62,299 | ) |  | 58,445 |  |  | 16 |  | 115,899 |  |  | (57,227 | ) |  | 58,672 |
Customer relationships | 273,413 |  |  | (92,692 | ) |  | 180,721 |  |  | 14 |  | 256,202 |  |  | (85,652 | ) |  | 170,550 |
Unpatented technology | 99,967 |  |  | (40,713 | ) |  | 59,254 |  |  | 12 |  | 96,922 |  |  | (35,685 | ) |  | 61,237 |
Other | 700 |  |  | (560 | ) |  | 140 |  |  | 10 |  | 700 |  |  | (507 | ) |  | 193 |
Total amortized intangible assets | 501,407 |  |  | (201,399 | ) |  | 300,008 |  |  |  |  | 476,191 |  |  | (183,764 | ) |  | 292,427 |
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Banjo trade name | 62,100 |  |  | — |  |  | 62,100 |  |  |  |  | 62,100 |  |  | — |  |  | 62,100 |
Akron Brass trade name | 28,800 |  |  | — |  |  | 28,800 |  |  |  |  | 28,800 |  |  | — |  |  | 28,800 |
Total intangible assets | $ | 592,307 |  |  | $ | (201,399 | ) |  | $ | 390,908 |  |  |  |  | $ | 567,091 |  |  | $ | (183,764 | ) |  | $ | 383,327 |

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